Q. In the reaction
the intermediate(s) is(are) –
[JEE 2009]
the intermediate(s) is(are) –
[JEE 2009]
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Sol. (A,B,C)
Q. The compounds P, Q and S
were separately subjected to nitration using $\mathrm{HNO}_{3} / \mathrm{H}_{2} \mathrm{SO}_{4}$ mixture. The product formed in each case respectively, is
[JEE 2009]
were separately subjected to nitration using $\mathrm{HNO}_{3} / \mathrm{H}_{2} \mathrm{SO}_{4}$ mixture. The product formed in each case respectively, is
[JEE 2009]
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Sol. (C) (1)
Q. The correct acidity order of the following is :
(A) (III) > (IV) > (II) > (I)
(B) (IV) > (III) > (I) > (II)
(C) (III) > (II) > (I) > (IV)
(D) (II) > (III) > (IV) > (I)
[JEE 2009]
(A) (III) > (IV) > (II) > (I)
(B) (IV) > (III) > (I) > (II)
(C) (III) > (II) > (I) > (IV)
(D) (II) > (III) > (IV) > (I)
[JEE 2009]
Q. In the following carbocation, $\mathrm{H} / \mathrm{CH}_{3}$ that is most likely to migrate to the positively charged carbon is :
(A) $\mathrm{CH}_{3}$ at $\mathrm{C}-4$
(B) H at C – 4
(C) $\mathrm{CH}_{3}$ at $\mathrm{C}-2$
(D) H at C – 2
[JEE 2009]
(A) $\mathrm{CH}_{3}$ at $\mathrm{C}-4$
(B) H at C – 4
(C) $\mathrm{CH}_{3}$ at $\mathrm{C}-2$
(D) H at C – 2
[JEE 2009]
Q.
The structure of the Product T is :
[JEE 2010]
The structure of the Product T is :
[JEE 2010]
Q. Among the following compounds, the most acidic is
(A) p-nitrophenol
(B) p-hydroxybenzoic acid
(C) o-hydroxybenzoic acid
(D) p-toluic acid
[JEE 2011]
Q. The maximum number of isomers (including stereoisomers) that are possible on mono-chlorination of the following compounds, is
[JEE 2011]
[JEE 2011]
Q. Among P, Q, R and S, the aromatic compound(s) is / are :
(A) P (B) Q (C) R (D) S
[JEE 2013]
(A) P (B) Q (C) R (D) S
[JEE 2013]
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Sol. (A,B,C,D)
Q. The major product(s) of the following reaction is (are) –
(A) P (B) Q (C) R (D) S
[JEE 2013]
(A) P (B) Q (C) R (D) S
[JEE 2013]
Q. In the following reaction, the product (s) formed is (are)
(A) P (major) (B) Q (minor) (C) R (minor) (D) S (major)
[JEE 2013]
(A) P (major) (B) Q (minor) (C) R (minor) (D) S (major)
[JEE 2013]
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Sol. (B,D)
Q. In the following reaction sequences V and W are , respectively –
[JEE 2013]
[JEE 2013]
Paragraph for Question 11 and 12 P & Q are isomers of dicarboxylic acid $\mathrm{C}_{4} \mathrm{H}_{4} \mathrm{O}_{4}$. Both decolourize $\mathrm{Br}_{2} / \mathrm{H}_{2} \mathrm{O}$, On heating P forms the cyclic anhydride. Upon treatment with dilute alkaline $\mathrm{KMnO}_{4}$, P as well as Q could produce one or more than one from S, T and U. [JEE 2013]
Q. Compounds formed from P and Q are respectively
(A) Optically active S and optically active pair (T, U)
(B) Optically inactive S and optically inactive pair (T, U)
(C) Optically active pair (T, U) and optically active S
(D) Optically inactive pair (T, U) and optically inactive S
[JEE 2013]
Q. In the reaction shown below, the major product(s) formed is / are :
[JEE 2014]
[JEE 2014]
Q. The reactivity of compound Z with different halogens under appropriate conditions is given below-
The observed pattern of electrop hilic substitution can be explained by –
(A) The steric effect of the halogen
(B) The steric effect of the tert-butyl group
(C) The electronic effect of the phenolic group
(D) The electronic effect of the turt-butyl group
[JEE 2014]
The observed pattern of electrop hilic substitution can be explained by –
(A) The steric effect of the halogen
(B) The steric effect of the tert-butyl group
(C) The electronic effect of the phenolic group
(D) The electronic effect of the turt-butyl group
[JEE 2014]
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Sol. (A,B,C)
Q. Match the four starting materials (P , Q, R, S) given in List I with the corresponding reaction scheme (I, II, III, IV) provided in List – II and select the correct answer using the code given below in lists.
[JEE 2014]
[JEE 2014]
Q. In the reaction
the product E is :-
[IIT-2015]
[IIT-2015]
Q. In the following sequence of reactions :
(A) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \mathrm{OH}$
(B) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHO}$
(C) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COOH}$
(D) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{3}$
[IIT 2015]
(A) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \mathrm{OH}$
(B) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHO}$
(C) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COOH}$
(D) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{3}$
[IIT 2015]
Q. The major product U in the following reactions is :
[IIT 2015]
[IIT 2015]
Q. In the following reactions, the major product W is :
[IIT 2015]
[IIT 2015]
Q. Among the following the number of reaction(s) that produce(s) benzaldehyde is :
[IIT 2015]
[IIT 2015]
